Concrete from tie



June 29, 1937. A, [1 sum 2,085,652

CONCRETE FORM TIE Filgd Aug. 6, 1955 ,l a'ycd.

M A U a ATTORNEY Patented June 29, 1937 UNITED stares PATENT OFF] E 2,085,652 CONCRETE FORM TIE Albert D. Guidi, Great Barrington, Mass.

Application August 6, 1935, Serial No. 34,954

3 Claims.

This invention relates to ties for concrete forms, and its general object is to provide wire clamps. that not only grip the wires for cooperation therewithv to hold the forms in proper position, but the wire clamps can be easily and expeditiously applied and removed with respect to the form without damage to the latter or the clamps, consequently the forms and the clamps can be repeatedly used for a prolonged period of time with the same efiiciency as the first time.

Another object of the invention is to provide a concrete form tie that is simple in construction, inexpensive to manufacture and extremely eflicient in operation, use and service.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure l is a sectional view taken through a concrete form showing my tie in use.

Figure 2 is a front view of one of the wire clamping devices of my tie.

Figure 3 is a sectional view taken through the Wedge receiving member, with the wires and wedge in elevation.

Figure 4 is a front view of a slightly modified form of wedge clamp.

Figure 5 is a vertical sectional view taken therethrough.

Figure 6 is a side elevation of the wedge.

Referring to the drawing in detail, and particularly to Figure 1, it will be noted that I have shown a concrete form that includes the usual sides A, uprights B, wales C, and spreaders D disposed between the sides A.

The sides A are provided with openings for the passage of the tie wires I which extend through bores formed in the wales C, the latter having fixed thereto the wedge receiving members of my tie or clamp, as shown.

The form of wedge receiving member as shown in Figures 1, 2 and 3 includes a base plate 2 that is preferably square in outline and extending from the base plate. 2 is a collar 3, the bore 4 of which extends through the base plate and is tapered in a manner whereby it decreases in diameter from the outer end of the collar, as best shown in Figure 3.

The base plates 2 of the wedge receiving members preferably have arranged therein adjacent to at least two of the corners thereof, openings 5 for the purpose of receiving securing means such as nails 6 for fastening the wedge receiving members to the Wales C as shown in Figure 1.

The wire wedges each include a shank I, that is likewise tapered toward its free end, but the shank has formed thereon a plurality of substantially conical portions 3 that decrease in size toward the free end to provide teeth, as best shown in Figure (i. A head 9 is included in each of the wire wedges and is disposed at right angles with respect to the shank, so as to facilitate the application of a tool,.such as a claw bar thereto,

in applying and removing the same with respect to the bore of the collar 3.

It will of course be understood, and as shown in Figure I, the wedge receiving members and wedges are used in cooperating pairs, and the ends of the wires l are passed through the bores of the collars 3, thence the wedges are inserted in the bores, with the teeth in biting engagement with the ends of the wires, as clearly shown in Figure 3, with the result it will be seen. that it is practically impossible for the wires to slip and they are drawn taut, so that the form is held in proper position and against accidental movement.

In the form as shown in Figures 1, 2 and 3, the ends of the wires are preferably disposed to contact opposed portions of the bore 4, while in Figures 4 and 5, I provide wedge receiving members that include recesses ID for receiving the wires, there being one recess III of a size to accommodate two wires, but only one wire may be used if desired. The remaining structure of the form of the invention shown in Figures 4 and 5 is identical with that shown in the other figures of the drawing.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may'make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is:

1. In a tie for concrete forms, a tie wire, and clamping means for one end thereof comprising a collar member having a conical bore through which the tie wire extends, and a wedging key having an engaging end of the general conical shape conforming to the conical bore of the collar and with circumferential interruptions providing gripping teeth for engaging the tie wire at any angle at which the key may be inserted in the bore of the collar or position the tie wire may engage the bore of the collar.

2. In a tie for concrete forms, a tie wire, and clamping means for one end thereof comprising a collar member having a, conical bore through which the tie wire extends, a wedging key having an engaging end of the general conical shape conforming to the conical bore of the collar and with circumferential interruptions providing gripping teeth for engaging the tie wire at any angle at which the key may be inserted in the engage the bore of the collar, and said key having a laterally disposed head portion at its other end to facilitate in the removal thereof.

3. In a tie for concrete forms, a tie wire, and clamping means for one end thereof comprising a collar member having a conical bore through which the tie wire extends, a wedging key having an engaging end of the general conical shape conforming to the conical bore of the collar and with circumferential interruptions providing gripping teeth for engaging the tie wire at any angle at which the key may be inserted in the bore of the collar, and said collar having a recess along one side of its conical bore for receiving a tie wire to definitely position it with respect thereto.

ALBERT D. GUIDI. 

